CN117064476A - Vena cava blood flow-limiting mechanism - Google Patents
Vena cava blood flow-limiting mechanism Download PDFInfo
- Publication number
- CN117064476A CN117064476A CN202311105291.6A CN202311105291A CN117064476A CN 117064476 A CN117064476 A CN 117064476A CN 202311105291 A CN202311105291 A CN 202311105291A CN 117064476 A CN117064476 A CN 117064476A
- Authority
- CN
- China
- Prior art keywords
- bag body
- vena cava
- catheter
- channel
- bladder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000008280 blood Substances 0.000 title claims abstract description 32
- 210000004369 blood Anatomy 0.000 title claims abstract description 32
- 239000007788 liquid Substances 0.000 claims abstract description 21
- 230000004087 circulation Effects 0.000 claims abstract description 15
- 239000003550 marker Substances 0.000 claims description 14
- 230000017531 blood circulation Effects 0.000 claims description 11
- 230000008602 contraction Effects 0.000 claims description 2
- 239000012530 fluid Substances 0.000 claims description 2
- 230000002526 effect on cardiovascular system Effects 0.000 abstract 1
- 239000002775 capsule Substances 0.000 description 9
- 230000000903 blocking effect Effects 0.000 description 4
- 239000004698 Polyethylene Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 229920002614 Polyether block amide Polymers 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000012632 fluorescent imaging Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- VPRUMANMDWQMNF-UHFFFAOYSA-N phenylethane boronic acid Chemical compound OB(O)CCC1=CC=CC=C1 VPRUMANMDWQMNF-UHFFFAOYSA-N 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
- A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
- A61B17/12027—Type of occlusion
- A61B17/12036—Type of occlusion partial occlusion
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
- A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
- A61B17/12099—Occluding by internal devices, e.g. balloons or releasable wires characterised by the location of the occluder
- A61B17/12109—Occluding by internal devices, e.g. balloons or releasable wires characterised by the location of the occluder in a blood vessel
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
- A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
- A61B17/12131—Occluding by internal devices, e.g. balloons or releasable wires characterised by the type of occluding device
- A61B17/12136—Balloons
Landscapes
- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Reproductive Health (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Media Introduction/Drainage Providing Device (AREA)
Abstract
The invention discloses a vena cava blood flow-limiting mechanism, which belongs to the field of cardiovascular equipment, and comprises: the catheter is internally provided with a guide wire channel and at least one first filling channel, wherein the guide wire channel is used for guiding a wire to pass through, and the first filling channel is used for conveying filling liquid; the first bag body is positioned at the distal end of the catheter and connected with the catheter, the first bag body is positioned in a vena cava, the first bag body is internally provided with a first bag body cavity, the pressure in the first bag body cavity can be controlled, when the pressure in the first bag body cavity changes, the first bag body can expand and contract to enable the first bag body to have a contracted state and an expanded state, in the contracted state, the surface of the first bag body is contacted with the catheter, in the expanded state, the surface of the first bag body is contacted with the wall of the vena cava to limit the blood to flow through, and when the first bag body is in the expanded state, the first bag body comprises a circulation channel, and the circulation channel penetrates through the first bag body to enable the blood to pass through the first bag body through the circulation channel.
Description
Technical Field
The present invention relates to the field of vena cava.
Background
In order to control the excess blood flow in the vena cava, a balloon is usually provided in the vena cava, and the balloon is made to open to block the blood flow, and when the balloon is fully opened, the existing balloon can completely block the blood flow, and in some cases, the excess blood flow needs to be reduced, and the blood flow cannot be completely blocked. If the balloon is not fully inflated, although theoretically not completely blocking blood, the balloon is not fully inflated, it does not have enough compression force with the inner wall of the vena cava, and the position of the balloon is not stable enough.
Disclosure of Invention
The invention aims to solve the problems in the prior art and discloses a vena cava blood flow limiting mechanism, which comprises:
the catheter is internally provided with a guide wire channel and at least one first filling channel, wherein the guide wire channel is used for guiding a wire to pass through, and the first filling channel is used for conveying filling liquid;
the first bag body is positioned at the distal end of the catheter and connected with the catheter, the first bag body is positioned in a vena cava, the first bag body is internally provided with a first bag body cavity, the pressure in the first bag body cavity can be controlled, when the pressure in the first bag body cavity changes, the first bag body can expand and contract to enable the first bag body to have a contracted state and an expanded state, in the contracted state, the surface of the first bag body is contacted with the catheter, in the expanded state, the surface of the first bag body is contacted with the wall of the vena cava to limit the blood to flow through, and when the first bag body is in the expanded state, the first bag body comprises a circulation channel, and the circulation channel penetrates through the first bag body to enable the blood to pass through the first bag body through the circulation channel.
In a modified version, a marker is provided on the catheter to obtain the position of the first balloon in the vena cava.
In a further development, the markers include a first marker located at the proximal end of the first balloon and a second marker located at the distal end of the first balloon.
In the improved scheme, the first filling channel is communicated with the first capsule cavity of the first capsule body, and the joint of the first filling channel and the first capsule cavity is a filling port.
In an improved version, the catheter is provided with at least 2 filling ports at different positions on the catheter.
In the improved scheme, the second bag body is arranged on the circulation channel, and when the first bag body is in an expanded state, the second bag body can control the flow rate of blood flowing through the circulation channel.
In the scheme of improvement, be equipped with the second bag body cavity in the second bag body, be equipped with the second filling passageway in the pipe, second filling passageway and second bag body cavity intercommunication, the second filling passageway can exchange liquid with the second bag body cavity to change the pressure in the second bag body cavity, when the pressure in the second bag body cavity changes, the flexible state of second bag body changes, in order to control the velocity of flow that blood flowed through the circulation passageway.
In an improved scheme, an operation part is arranged at the proximal end of the catheter, and the operation part can control the states of the first bag body and the second bag body. In the improved scheme, the operation part is a three-fork interface. In a modified version, the trifurcate interface is bonded to the catheter.
The vena cava blocking structure can still have a circulation channel under the condition of being fully extruded with the inner wall of the vena cava, can enable blood to pass through the vena cava blocking structure, can ensure that the blood flows through the vena cava blocking structure under the condition of being stable, and can also control the flow of the blood through the second capsule under the condition of being stable.
Drawings
FIG. 1 is a schematic cross-sectional view of the present invention;
FIG. 2 is a schematic cross-sectional view of a catheter;
FIG. 3 is a schematic illustration of the present invention;
FIG. 4 is a schematic illustration of the present invention;
the marks in the figure: 10-catheter, 11-filling port, 12-guidewire channel, 13-first filling channel, 14-second filling channel, 20-first balloon, 31-first marker, 32-second marker, 40-operating portion, 41-first filling liquid channel, 42-second filling liquid channel, 50-flow channel, 60-second balloon.
Detailed Description
The embodiments of the present invention will be described more fully hereinafter with reference to the accompanying drawings, in which the structures described in the embodiments below are shown by way of illustration only, and all other embodiments obtained by those skilled in the art without making any inventive effort are within the scope of the present invention.
The present embodiment discloses a vena cava blood restriction mechanism, as shown in fig. 1 and 2, comprising a catheter 10 and a first balloon 20 connected to the catheter 10. As shown in fig. 2, the catheter 10 is provided with a guide wire channel 10 and at least one first filling channel 13 inside, the guide wire channel 10 is used for guiding a wire to pass through, the first filling channel 13 is used for conveying filling liquid, the cross section of the guide wire channel 10 is preferably circular so as to be capable of guiding the wire, and the cross section of the first filling channel 13 is preferably elliptical so as to be capable of conveying more filling liquid. The catheter material is a thermoplastic polymer material including, but not limited to, polyethylene (PE), PEBA, and the like.
The first balloon 20 is located at the distal end of the catheter 10 and is connected to the catheter 10, the first balloon 20 is located in the vena cava, the first balloon body is a first balloon cavity, and the balloon is made of non-compliant or semi-compliant materials, such as nylon and the like. The first bladder cavity can be provided with filling liquid, the pressure in the first bladder cavity can be controlled, when the pressure in the first bladder cavity changes (for example, filling liquid is injected into the first bladder cavity or filling liquid is pumped out of the first bladder cavity), the first bladder 20 can expand and contract to enable the first bladder to have a contracted state in which the surface of the first bladder is in contact with the catheter and an expanded state in which the surface of the first bladder is in contact with the vena cava wall to limit blood flow, and when the first bladder is in the expanded state, the first bladder comprises a flow channel 50, and the flow channel 50 penetrates through the first bladder to enable blood to pass through the first bladder through the flow channel. The flow channel 50 corresponds to a notch formed in the first bladder, as shown in fig. 4. The required notch can be formed when the first bag body expands by processing the surface of the first bag body. The first capsule body can also be provided with an ellipsoid or a cylinder and other structures.
Continuing, the first filling channel 13 is communicated with the first capsule cavity of the first capsule body, and the joint of the first filling channel 13 and the first capsule cavity is a filling port 11. Preferably, as shown in fig. 1, at least 2 filling ports 11 are provided on the catheter 10, and the filling ports 11 are located at different positions on the catheter, and of course, other numbers of filling ports 11 may be provided, so that the filling liquid can be timely delivered into the first capsule cavity.
When the first balloon is fully expanded and the vena cava wall is in contact, the size of the flow channel 50 is fixed, i.e. the flow rate of blood is fixed and cannot be adjusted as required, so in a modified version, the flow channel 50 is provided with a second balloon 60 which can control the flow rate of blood flowing through the flow channel when the first balloon is in the expanded state. A second balloon cavity is provided in the second balloon body, as shown in fig. 2, a second filling channel 14 is provided in the catheter 10, the second filling channel 14 is communicated with the second balloon cavity, and the specific second filling channel 14 is communicated with the second balloon cavity through a hose penetrating through the first balloon cavity. The second filling channel is capable of exchanging fluid with the second bladder cavity to change the pressure in the second bladder cavity, and when the pressure in the second bladder cavity changes, the expansion and contraction state of the second bladder changes to control the flow rate of blood flowing through the flow channel. In a preferred embodiment, the shapes of the notches of the second bladder after being expanded and the shapes of the notches of the circulation channel 50 are matched with each other, so that the second bladder can completely cover the notches when in an expanded state, in a more preferred embodiment, the second bladder and the first bladder share part of the surface skin of the bladder, the pressure of the second bladder cavity is reduced, the surface skin of the second bladder is contracted when the second bladder contracts so as to expose the notches, and blood can be allowed to flow, in this case, when the excessive blood flow needs to be reduced, the first filling channel 13 is closed, the second filling channel 14 is opened, so that filling liquid is injected into the second bladder cavity by the second filling channel 14, the second bladder is expanded, so that the excessive blood flow in the circulation channel is reduced, and when the second bladder is completely expanded, the second bladder just covers the notches, and can completely prevent the blood from flowing through according to needs.
The catheter 10 is provided with a marker to obtain the position of the first balloon in the vena cava. The marker comprises a first marker 31 located at the proximal end of the first balloon 20 and a second marker located at the distal end of the first balloon 20, and in a more preferred embodiment, the marker is a ring-shaped metal material for indicating the length of the balloon under fluorescent imaging, and the marker is a radiopaque metal material such as gold, platinum, etc.
The proximal end of the catheter 10 is provided with an operation part 40, and the operation part 40 can control the states of the first balloon and the second balloon. In a preferred embodiment, the operation portion 40 is a three-fork interface, and a channel communicating with the guide wire channel is provided on the main body pipe of the three-fork interface, so as to guide the guide wire. The side pipeline of three fork interface on be equipped with two filling liquid pipelines, first filling liquid pipeline 41 promptly, second filling liquid pipeline 42, first filling liquid pipeline 41, second filling liquid pipeline 42 with first filling passageway and second filling passageway intercommunication, first filling liquid pipeline 41, second filling liquid pipeline 42 pour into filling liquid into it as required through the syringe, in specific embodiment, three fork interface and pipe bonding, of course also can be connected through other connected modes, do not limit here.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (10)
1. The vena cava blood flow-limiting mechanism is characterized by comprising:
a catheter (10) with a guide wire channel (10) and at least one first filling channel (13) inside, wherein the guide wire channel (10) is used for guiding a wire to pass through, and the first filling channel (13) is used for conveying filling liquid;
the first bag body (20) is located at the distal end of the catheter (10) and is connected with the catheter (10), the first bag body (20) is located in a vena cava, the first bag body is a first bag body cavity, the pressure in the first bag body cavity can be controlled, when the pressure in the first bag body cavity changes, the first bag body (20) can expand and contract to enable the first bag body to have a contracted state and an expanded state, in the contracted state, the surface of the first bag body is contacted with the catheter, in the expanded state, the surface of the first bag body is contacted with the vena cava wall to limit blood to flow, and when the first bag body is in the expanded state, the first bag body comprises a circulation channel (50), and the circulation channel (50) penetrates through the first bag body to enable blood to pass through the first bag body through the circulation channel.
2. The vena cava blood restriction mechanism as recited in claim 1, wherein the catheter (10) is provided with a marker to capture the position of the first balloon in the vena cava.
3. The vena cava blood restriction mechanism as recited in claim 2, wherein the markers include a first marker (31) located at a proximal end of the first balloon (20) and a second marker located at a distal end of the first balloon (20).
4. A vena cava blood restriction mechanism as claimed in claim 3 wherein the first inflation channel (13) communicates with the first balloon cavity of the first balloon, and the junction of the first inflation channel (13) and the first balloon cavity is an inflation port (11).
5. The vena cava blood restriction mechanism as recited in claim 4, wherein the catheter (10) is provided with at least 2 filling ports (11), the filling ports (11) being at different locations on the catheter.
6. The vena cava blood restriction mechanism as recited in any of claims 1-5 wherein the flow channel (50) is provided with a second bladder (60) that is configured to control the flow rate of blood through the flow channel when the first bladder is in the expanded state.
7. The vena cava blood restriction mechanism as recited in claim 6 wherein a second bladder is disposed within the second bladder, a second filling passage (14) is disposed within the catheter (10), the second filling passage (14) is in communication with the second bladder, the second filling passage is capable of exchanging fluid with the second bladder to vary the pressure within the second bladder, and the expansion and contraction state of the second bladder is varied when the pressure within the second bladder is varied to control the flow rate of blood through the flow passage.
8. The vena cava blood restriction mechanism as recited in claim 7, wherein the proximal end of the catheter (10) is provided with an operating portion (40), the operating portion (40) being configured to control the condition of the first and second balloons.
9. The vena cava blood restriction mechanism as recited in claim 8, wherein the operating portion (40) is a trifurcated interface.
10. The vena cava blood flow restricting mechanism of claim 9, wherein the trifurcated interface is bonded to the catheter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311105291.6A CN117064476A (en) | 2023-08-30 | 2023-08-30 | Vena cava blood flow-limiting mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311105291.6A CN117064476A (en) | 2023-08-30 | 2023-08-30 | Vena cava blood flow-limiting mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117064476A true CN117064476A (en) | 2023-11-17 |
Family
ID=88713183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311105291.6A Pending CN117064476A (en) | 2023-08-30 | 2023-08-30 | Vena cava blood flow-limiting mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117064476A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108348735A (en) * | 2015-09-16 | 2018-07-31 | 爱德华兹生命科学公司 | perfusion balloon design |
| US20190175186A1 (en) * | 2016-06-05 | 2019-06-13 | Government Of The United States As Represented By The Secretary Of The Air Force | Flow rate control device for variable artery occlusion |
| CN109953780A (en) * | 2019-04-30 | 2019-07-02 | 靖海岭 | A kind of TIPS operation inlays overlay film frame with sacculus |
| CN210521043U (en) * | 2019-06-12 | 2020-05-15 | 柳州市人民医院 | External blocking device for inferior vena cava blood flow blood vessel cavity |
| CN112439122A (en) * | 2019-09-05 | 2021-03-05 | 尤东侠 | Balloon dilatation catheter |
| CN113769246A (en) * | 2021-09-13 | 2021-12-10 | 王建 | Coronary sinus pressure regulating system |
-
2023
- 2023-08-30 CN CN202311105291.6A patent/CN117064476A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108348735A (en) * | 2015-09-16 | 2018-07-31 | 爱德华兹生命科学公司 | perfusion balloon design |
| US20190175186A1 (en) * | 2016-06-05 | 2019-06-13 | Government Of The United States As Represented By The Secretary Of The Air Force | Flow rate control device for variable artery occlusion |
| CN109953780A (en) * | 2019-04-30 | 2019-07-02 | 靖海岭 | A kind of TIPS operation inlays overlay film frame with sacculus |
| CN210521043U (en) * | 2019-06-12 | 2020-05-15 | 柳州市人民医院 | External blocking device for inferior vena cava blood flow blood vessel cavity |
| CN112439122A (en) * | 2019-09-05 | 2021-03-05 | 尤东侠 | Balloon dilatation catheter |
| CN113769246A (en) * | 2021-09-13 | 2021-12-10 | 王建 | Coronary sinus pressure regulating system |
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